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copied!<p>I'd like to expand on what Dan said. </p> <p>It's a very common misconception that Scrum / Agile dictates software engineering principles. This is a fallacy for many reasons. As Dan mentioned, Scrum is a software <em>management</em> process, NOT a software engineering process. That being said, very often you will see many engineering principles associated with Scrum; methodologies such as TDD, XP, etc tend to complement the management methodology that Scrum promotes, but are not required. </p> <p>The reason that CI, TDD, and other engineering practices are so often found hand-in-hand with Scrum is that in general, many are good practices to follow no matter what management methodology is used.</p> <p>I'd like to address a couple other fallacies in your OP:</p> <blockquote> <p>However with Scrum the developers are expected:</p> </blockquote> <pre><code>* to all be able to work on all the bits of the application. * to only work on one area of the application for a few days at most before moving to the next area * to mostly work on code they did not write </code></pre> <ol> <li><p>As mentioned above, Scrum doesn't dictate what type or kind of work a developer works on. The developers themselves decide on what work to commit themselves to; if a database-heavy dev wants to only work on the DAL and associated stories, there's no reason that they cannot.</p></li> <li><p>Again, Scrum doesn't dictate anything about how to build the application, so your second point is moot (see point 1).</p></li> <li><p>This is a fallacy, since there is nothing that says a developer should only work on code that isn't theirs, or anything about how a developer should develop. If a developer on a Scrum team finds his/herself only working on others' code, that would be coincidental, not because of the scrum process itself.</p></li> </ol> <p>See <a href="https://stackoverflow.com/questions/859358/are-teams-working-in-agile-typically-resistant-to-hiring-people-who-havent-worke/859557#859557">this</a> question/answer for more information on the qualities generally expected in a developer working Scrum.</p>

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